Wrench.



No. 712,574. Patented Nov. 4, |902.

L. MGLAURIN.

WRENCH.-

(Application led- Sept. 9, 1902.)

(No Model.)

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NiTED STATES j PATENT OFFICE.

LAUGHLIN A. MGLAURIN, OF RAEFORD, NORTIIOAROLINA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 712,574, dated November 4, 1902.

Application ined september 2,1902. seria No. 121.898. (No maar TO all whom, t may con/cern:

Be it known that LLAUGHLIN A. MOLAURIN,

a citizen ofthe United States, residing at Raef: ford, in the county of Cumberland and State of North Carolina, have invented a new and tion consists in certain novel features of con` struction,as hereinafter shown a nd described,

and specied in the claims. l

In the drawings illustrative of the invention, Figure 1 is a side elevation of a wrench embodying the improvements. Fig. 2 is a longitudinal sectional elevation oithe same. Fig. 3 is a transverse section on the line III III of Fig. 1. Figs. 4 and 5 are transverse sections on the line IV IV of Fig. 1, illustrating the two positions of the lock-bar.

Theimproved Wrench consists in a shank or stock lO, having the xed jaw 11 upon one end and the handle'12 upon the other end.

The movable jaw is represented at 13 slidably disposed upon the stocklOand having an internal cavity-14, as shown inFig. 2.

Rotatively engaging the stock 10, adjacent to thehandle member 12, is a collar 15, hav- `The collar 15 is disposed rotatively upon the stockand ing an internal screw-thread 16.

prevented from longitudinal movement thereon, as by a recess 17 inthe stock and by longitudinal projections 18 upon the handle member 12, the projections 18 extending forward of the handle member andalongside of the stock 10, as indicated in Figs. 4- and 5, but do not project over the upper surface of the stock.

Within the handle member above the stock 10 a longitudinal cavity19 is formed, and longitudinally movable within this cavity is a bar 20, extended ori one side. and provided with a screw-thread 21 upon the extended side and adapted to engage the thread 16` Within the collar 15 when the bar 20 is in its operative position, as shown in Figs. 1, 2, and

dinal movement when connected, as indicated in Fig. 2.

While the form of th readshown is the preferable one, I donot wish to be limited thereto, as any other form ofthread might be employed without departing from the principle of the invention.

Thebar 2O `is rotatively supported, as by a stud 22, in the movable jaw 13 and provided within the jawA with a stud 23, projecting outward through a transverse slot 211 in the upper part o.' the jaw 13, as shown in Figs. .1, 2, and 3.` By this simple means it will be readily understood that the bar 2O may be actuated by simply moving the pin laterally i in its aperture 24, as indicated by dotted lines in Fig. 3. It will thus be obvious by this construction that the bar 20'is in its operative position, as shown in Figs. l, 2, 3, and 4, and the pin 23 likewise in its operative position. It will also be obvious that if the pin 23 be turned down, as in dotted lines in Fig. 3, the bar 2O will be likewise turned down, as shown in Fig. 5, and thus disconnect its threads 2l from the threads 16 in the collar, leaving the jaw member 13 free'to be moved longitudi nally of the stock 10 to any desired extent and without interference from the collar 15. Vhen thus moved longitudinally, the bar 2O will slide within the aperture "19 in the handle12. By this simple means the operator by simply pressing histhumb upon the pin 23 and turning it downward in the slot 24 can instantly disengage the bar 2O and adj ust the movable jaw 13quickly to any desired extent, and when thus adjusted the return of the pin to its former position will rengage the jaw with the collar. i with the collar, the rotation of the latter will move the bar 20 longitudinally of the stock and adjust the jawsll 13 relatively in the same manner as an ordinary screw-wrench, so that in this implement is combined all the When thus engaged IOO advantages of the ordinary screw-Wrench and of a quick-action Wrench, as Will be obvious.

Some means Willbe employed for the purpose of maintaining the lock-bar 2O normally in operative position, and such a. means is shown in Fig. 2, consisting in a coiled spring 25, connected by one end at 26 to the jaw 13 and by the other end at 27 to the stud 22 of the lock-bar 20 and adapted to exert its force to yieldably maintain the lock-bar normally in operative position, as will be obvious. By this simple means when the operator releases the pin 23 the bar will at once be returned to its operative position and be thus maintained during the operation of the wrench and while being adjusted by the rotation of the collar 15, or, in other Words, While the Wrench is being employed as a screw-Wrench.

The spring 25 Will be formed of sufficient strength to resist any tendency of accidental displacement of the bar 20 While in use, but which will yield by pressure exerted upon the pin 23.

The pin 23, it will be noted, is shielded by the surrounding material of the jaw 13, and the aperture 24: and the pin 23 are located in a position Where they will be least liable to be interfered with While the wrench is in use, so that the chances for accidental displacement of the bar 2O are very remote.

The parts may be constructed of any desired size and strength and of any desired relative proportions and of any desired material. The collar 15 will preferably be milled or otherwise roughened exteriorly to assist the grip of the operator when rotating it.

The handle member 12 may be of any required material, either Wood or metal, or partially of each.

The parts may be modied and changed in minor particulars Without departing from the principle of the invention or sacriticing any of its advantages.

Having thus described the invention, What is claimed is- 1. In a Wrench, the combination of a stock havinga fixed jaw, a movablejawslidably disposed upon said stock, an internally-threaded collar rotatively engaging said stock, and a lock-bar threaded upon one side and engaging said collar and movably connected to said movable jaw, whereby when said lock-bar is in one position, said movable jaw Will be operative by the rotation of said collar, and released when said lock-bar is actuated, substantially as described.

2. In awrench, the combination of a stock having a fixed jaw on one end and a handle member upon the other end, a movable jaw slidably disposed upon said stock, an internally-threaded collar rotatively engaging said stock, a lock-bar threaded upon one side and engaging said collar and movably connected to said movable jaw, and means operative Within said movable jaw for actuating said lock-bar, substantially as described. Y

3. In a Wrench, the combination of astock having a fixed jaw, a movable jaw slidably disposed upon said stock and having atransverse aperture, an internally-threaded collar rotatively engaging said stock, a lock-bar threaded upon one side and engaging said threaded collar and rotatively engaging said movable jaw, and a pin extending from said lock-bar through said aperture whereby said lock bar is actuated, substantially as described.

4. In a wrench, a stock having a fixed jaw, a hollow movable jaw slidably disposed upon said stock and having atransverse aperture, an internally-threaded collar rotatively engaging said stock, a lock-bar threaded upon one side and engaging said threaded collar and projecting into said holloW movable jaw, a pin extending from said lock-bar Within said movable jaw and projecting through said aperture, and a spring within said jaw and connecting said lock-bar therewith, and exerting its force to maintain said lock-bar normally in operative position, substantially as described.

5. In a wrench, the combination of a stock having a fixed jaw, a movable jaw slidably disposed upon said stock,an internally-threaded collar rotatively engaging said stock, a lock-bar threaded upon one side and engaging said collar-and movably connected to said movable jaw, means for actuating said lockbar, and a spring disposed to exert its force constantly upon said lock-bar and yieldably supporting it normally in operative position, substantially as described.

In testimony that I claim the foregoing as my own I have hereto aliixed my signature in the presence of tWo Witnesses.

LAUGHLIN A. MOLAURIN.

Witnesses:

R. D. DIcKsoN, GEO. A. GRAHAM.

IOO 

